Zimniewicz is one of the top two-way baseball players to have ever worn the Alfred State blue & gold. During his two years the Pioneers had an 86-43 record and he helped the team to the Region III Championship, the NY State Division I Championship, and the WNYAC Championship.
Zimniewicz carved his name all over the Alfred State baseball record book. He is the all-time leader during the spring season in at bats (173), RBI (58), and home runs (10). In the total year record book, he is the leader in games played (66), at bats (238), hits (91), RBIs (78), and total bases (155). In the career record book he is tops in games played (129) and at bats (440) while he is second in hits (166), RBIs (130), and total bases (262). His 16 career home runs rank him 3rd.
On the mound he was 6-2 for his career. He was the winning pitcher in the 2001 Regional Championship game as he tossed a complete game victory over Monroe CC.
Zimniewicz was a two-time All-Region and two-time All-WNYAC selection. He was named the ASC Most Valuable Position Player twice and was named the ASC Freshman Athlete of the Year in 2001.
After finishing at Alfred State College, he went on to SUNY Albany. Zimniewicz also spent time playing professional baseball with the Chillicothe Paints and the Elmira Pioneers.